A B747-400 failed to receive a revised maintenance release following the deferral of the stab trim indicator which malfunctioned after gate departure but prior to takeoff.

Narrative

On taxi out we got a 'stab trim green band' EICAS message. I successfully reset it by applying enough braking to compress the nose strut. A few minutes later we got it again. We ran the checklist but did not clear it. We called Dispatch and Maintenance and while discussing the events I ran the trim fore and aft then reset it where it belonged. the EICAS message went away. We told maintenance that it was gone and we were O.K. to continue. I did not make a writeup. I was number one for takeoff with a long line of traffic behind us. I felt pressure to move things along since we were holding up everyone for takeoff from that runway. Some traffic was able to take the intersection behind us. Maintenance Control deferred the stab trim indicator. I told tower we were ready to go now. They cleared us for an immediate takeoff. After takeoff I noticed an ACARS message advising of a need for a new maintenance release. The takeoff and the rest of the flight were uneventful. I was flying with a First Officer on his first or second [unsupervised] leg. I was backing up almost everything he did and trying to help him along. I loaded myself up too much. Since he was new to the fleet he really was not backing me up and I felt like I was almost continuing his line training. Next time I will just slow it down more and make sure I have covered all the bases.